JP4047019B2 - Electric golf cart for one bag - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention belongs to the technical field of one-bag electric golf carts that carry and carry one player's caddy bags one by one at a golf course.
[0002]
[Prior art]
Conventionally, many technologies exist for a one-bag electric golf cart for carrying a player's caddy bag at a golf course (for example, Japanese Patent Laid-Open Nos. 9-28847 and 8-229173).
[0003]
However, what is common to them is that the old hand cart is simply an electric type, and it is still an old state consisting of a chassis part (cart body) manufactured in a box shape and a handle part such as a metal round bar. Rugged design and structure.
[0004]
On the other hand, a golf cart in which the shape of the cart body or the like is aesthetically devised is well known as described in, for example, Design Registration No. 1102885 owned by the applicants of the present application.
[0005]
[Problems to be solved by the present invention]
Golf is now widely recognized as a social means on the green. Recently, the number of female players is increasing, and the elements of high-grade and stylish play are increasing. Therefore, only the golf cart has an old-fashioned design, and the time when a tool to carry a bag is sufficient is enough, and a fashionable golf cart will satisfy the player's satisfaction by reflecting on the nature's fairway. it is obvious.
[0006]
In that sense, it can be said that the novel design of the golf cart according to the registered design exactly fits the above requirements.
[0007]
An object of the present invention is to provide a practical electric golf cart that embodies the design.
[0008]
That is, when the entire cart body according to the design is molded from a synthetic resin, it is impossible to integrally mold the entire cart body when an injection molding method that is generally considered is employed. After considering and considering the ease of mold design, it must be divided into at least three parts. Even in such a case, the mold structure becomes considerably complicated, resulting in an expensive mold. In addition, an extremely large injection molding machine is required, resulting in high equipment costs and running costs. Moreover, since the molded product requires a process of joining the parts (parts) and assembling them into the cart body, the result is a very expensive golf cart.
[0009]
Depending on the type of synthetic resin material used, there may be problems in recycling and disposal. At least the use of vinyl chloride resin and the like must be avoided. In addition, since it is used under strong sunlight and exposed to wind and rain, it is necessary to give sufficient consideration to weather resistance.
[0010]
Next, golf players include people with great differences in physique (especially height) such as adults and children, men and women, or Japanese and Westerners. It is required to have a structure and size that can be commonly used by all such golf players. This is because preparing golf carts of various sizes depending on the player's physique cannot withstand the economic burden. However, since the handle of the “golf cart” is usually simply formed in a horizontal level form and lacks consideration for dealing with the physique difference of the player, the player may feel uncomfortable.
[0011]
Furthermore, there is a lack of positional linkage between the speed controller for controlling the speed of the golf cart and the handle. Moreover, since it is a knob type and not easy to operate, it was difficult to control the speed while holding the handle.
[0012]
The purpose of the present invention is to integrally mold the cart body by the rotary molding method of polyolefin resin, eliminating the body assembly process, low cost, easy to use, no problems of recycling and disposal, and strength And an electric golf cart for one bag having excellent weather resistance.
[0013]
The next object of the present invention is to provide a one-bag electric golf cart that can be used comfortably by anyone, regardless of the physique of the player, and can easily control the speed even when the handle is held. Is to provide.
[0014]
[Means for Solving the Problems]
As a means for solving the above-mentioned problems of the prior art, an electric golf cart for one bag according to the invention described in claim 1 is:
The entire cart body 1 including the chassis portion 2, the neck portion 3 rising from the same portion, and the handle portion 4 at the upper end of the neck portion is integrally formed into a hollow structure by a polyolefin resin rotary molding method.
The wheel under the chassis is composed of one front wheel 16 and two rear wheels 19, and the front wheel 16 is a free wheel that can swing in the horizontal direction and includes a suspension mechanism 15. Is configured as a drive wheel with a differential gear device 18 driven by a motor 17;
A carrier part 5 for loading a caddy bag 27 is provided on the upper surface of the chassis part 2, and a battery 20 and a control panel 21 are mounted in a battery chamber 8 formed with an openable / closable lid 7.
The handle portion 4 at the upper end of the neck portion is formed in a flat plate shape, and a concave back support portion 9 for supporting the caddy back 27 in a standing manner is provided at the front end thereof, and a round bar shape is formed in the peripheral portion from the neck portion 3 toward the rear side. The round bar-like handle 10 is bent in a direction substantially perpendicular to the advancing direction, and a lower grip portion 10a that extends downward from both sides of the handle portion 4 and is curved downward. It is composed of a high-order grip portion 10b that is curved upward from the corner portion and leads to the core portion 11,
A dial type speed controller 22 is installed on the core 11 , and a brake lever 23 is installed together with a lock mechanism 24 on the lower side of the round bar handle 10.
[0016]
Motorized golf cart for one bag according to the invention described in claim 2,
The entire cart body 1 including the chassis portion 2, the neck portion 3 rising from the same portion, and the handle portion 4 at the upper end of the neck portion are integrally formed into a hollow structure by a rotary molding method of polyolefin resin.
The wheel under the chassis is composed of one front wheel 16 and two rear wheels 19, and the front wheel 16 is a free wheel that can swing in the horizontal direction and includes a suspension mechanism 15. Is configured as a drive wheel provided with a differential gear device 18 driven by a motor 17.
A carrier portion 5 for loading a caddy bag 27 is provided on the upper surface of the chassis portion 2, and a battery 20 and a control panel 21 are mounted in a battery chamber 8 formed with an openable / closable lid 7.
The control panel 21 is composed of a microprocessing unit determines a voltage level of the battery 20 is converted into a digital signal, the signal of the speed controller 22 is sent to the microprocessing unit 21 into a digital signal, the microprocessing unit The number of rotations of the motor 17 is programmed in advance so as to correspond to the signal of the speed controller 22 and to perform speed control corresponding to the undulations of the golf course, and is detected by the number of rotations and the motor rotation number detection sensor 32 . Compared with the rotational speed of the motor 17, the drive signal is sent to the motor drive circuit 33 so as to substantially match .
The handle portion 4 at the upper end of the neck portion is formed in a flat plate shape, and a concave back support portion 9 for supporting the caddy back 27 in a standing manner is provided at the front end thereof, and a round bar shape is formed in the peripheral portion from the neck portion 3 toward the rear side. The round bar-like handle 10 is bent in a direction substantially perpendicular to the advancing direction, and a lower grip portion 10a that extends downward from both sides of the handle portion 4 and is curved downward. From the corner part, it is comprised by the high-order grip part 10b which curves upwards and is connected to the core part 11. FIG.
The core portion 11 speed controller 22 of the dial type is installed in the brake lever 23 on the lower side of the round bar handle 10 is installed with the locking mechanism 24, brake switch 34 is provided on the brake lever 23, the The control panel 21 is configured to switch or stop the drive signal to the motor drive circuit 33 through the brake switch 34 to the reverse drive signal .
Wherein and brake lock switch 37 is provided on the lock mechanism 24, the brake lever 23 is fixed, and wherein the displaying the microprocessing unit 21 is in a locked state to the state display LED 30.
[0017]
[Embodiments and Examples of the Present Invention]
The embodiment shown in FIGS. 1 to 6 will be described below.
The cart body 1 includes a substantially horizontal trapezoidal chassis part 2, a neck part 3 that rises slightly obliquely rearward from the rear position of the part, and a handle part 4 that is formed in a flat plate shape at the upper end of the neck part And the whole is integrally formed by a polyolefin resin rotatable molding method.
[0018]
Specifically, the chassis part 2 is provided with a carrier portion 5 for loading a caddy bag in front of the upper surface, and gradually rises as it goes rearward, covering the left and right rear wheels 19 and 19 in plan view. The shape has a rounded fender portion 6 that is wide enough to hide. A battery chamber 8 having a lid 7 that can be freely opened and closed is provided in a concave shape between the carrier portion 5 and the neck portion 3 (see FIG. 1).
[0019]
The neck portion 3 has a smart shape that rises smoothly while continuously tilting backward from the rise of the chassis portion 2, narrows as it goes upward, and continues to the handle portion 4.
[0020]
The flat handle portion 4 has a concave bag support portion that is curved and rises on both sides so that stability is good when the caddy bag 27 is leaned against the front end of the portion protruding forward from the upper end of the neck portion. 9, a round bar-like handle 10 formed from the neck portion 3 to the rear side, and a central core portion 11 are integrally formed (see FIG. 1).
[0021]
The round bar-like handle 10 is bent upward from a lower grip portion 10a that extends downward from the left and right sides of the core portion 11 while being bent downward and a corner portion that is bent in a direction substantially perpendicular to the movement direction. And a high grip portion 10b connected to the rear extension 11a of the core portion 11 ( see FIGS . 3 and 4). Accordingly, the golf player can operate the golf cart in an unreasonable posture by changing the position such that the short player grips the low grip portion 10a and the tall player grips the high grip portion 10b. Therefore, anyone can use it comfortably regardless of physique differences between adults and children, men and women, or Japanese and Westerners.
[0022]
The core 11 is provided with a drink holder 12, a hole 13a for an umbrella stand, and an accessory case 14 for storing a tee and a ball, which are indispensable for golf play and are prepared for comfortably enjoying golf play. . Incidentally, the umbrella is passed downward through the umbrella stand hole 13a, and the tip of the umbrella is inserted into the support hole 13b (see FIG. 3) of the chassis part 2 to be supported.
[0023]
Since the cart body 1 including the chassis part 2, the neck part 3 and the handle part 4 having the above-mentioned shape is an integrally molded product having a hollow structure as a whole, the cart body 1 is lightweight and requires less resin raw material. Moreover, it is possible to realize a smart and excellent design aesthetic shape including an elegant roundness as a whole. Since polyolefin resin can be molded in various colors, a colorful golf cart can be reflected on a golf course and satisfy a player's satisfaction.
[0024]
The procedure and process for forming the cart body 1 by the rotatable molding method are as follows.
[0025]
First, a polyolefin resin material (bead shape) is put into a molding die having the entire shape of the cart body 1 including the chassis part 2 (the lid 7 is separately molded), the neck part 3 and the handle part 4. To seal. The resin is uniformly melted while rotating the mold in a heating furnace by 2π rad, and adhered to the inner surface of the mold. Thereafter, after cooling the mold and solidifying the resin, the molded product (integrated molded product of the cart body 1) is taken out from the mold. Note that the molding die is composed of a combination of a plurality of divided dies in order to facilitate removal of the molded product.
[0026]
In the golf cart of the present invention, the cart body 1 is integrally formed by taking advantage of the above-described rotary molding method. Therefore, the structure of the molding die is relatively simple, and the cost of molding the cart body can be reduced. it can. Since it is a molding method that does not require pressure, unlike the injection molding method, it does not require a special large-sized and high-capacity molding machine, and the equipment cost and running cost are low, so the molding cost of the cart body 1 can also be reduced. . Therefore, it can contribute to the provision of a low-cost golf cart.
[0027]
Of course, since the cart body 1 is integrally molded, there is almost no need to assemble after molding, there is no concern about the structure and strength of the seam, and the manufacture is easy.
[0028]
In addition, as a feature of the rotatable molding method, the corner portion of the cart body 1 is formed with a large thickness, so that there is an advantage that the strength of the cart body 1 can be secured sufficiently.
[0029]
Polyolefin resins are easy to dispose of because they are harmless to the human body and natural environment even if incinerated. Since it is easy to recycle, an environmentally friendly golf cart can be provided. In addition, because of its excellent weather resistance, it is suitable for cart bodies that are exposed to ultraviolet rays and wind and rain, and is less susceptible to deterioration and sunburn.
[0030]
In the electric golf cart of the present invention, one front wheel 16 that can swing freely and has a suspension mechanism 15 is attached as a free wheel in front of the lower surface of the chassis portion 2 of the cart body 1. Therefore, running on a golf course with undulations is smooth. Two rear wheels 19 and 19 each having a differential gear device 18 driven by a motor 17 are attached to the rear of the lower surface of the chassis part 2 as drive wheels. Therefore, the operability (maneuverability) of the handle 10 is also good.
[0031]
A battery 20 and a control panel 21 are mounted in the battery chamber 8 of the chassis part 2. The battery 20 can be easily replaced by opening and closing the lid 7. Since the lid 7 swells toward the rear, rainwater does not enter the battery chamber 8 even when it rains, and the battery 20 and the control panel 21 can be prevented from being damaged.
[0032]
The handle portion 4 is provided with a dial speed controller 22 at the center of the core extension portion 11a in the vicinity of the joint portion of the high grip portion 10b (see FIG. 5). Accordingly, the player can control the speed by turning the speed controller 22 while holding the high grip portion 10b, which is convenient.
[0033]
A brake lever 23 that is curved in substantially the same shape as the handle 10 when viewed in plan is installed below the handle 10 together with a lock mechanism 24. The lock mechanism 24 includes a plate 24a bent inward and a hook 24b attached in the vicinity of the bent portion of the plate 24a, and the upper end of the plate 24a is rotatable to the lower rear end of the core extension 11a. They are connected (see FIGS. 1 and 2). Therefore, when stopping the golf cart, the player grasps and lifts the brake lever 23, rotates the plate 24a inward, and hooks the brake lever 23 on the hook 24b of the plate 24a. Then, the brake lever 23 is positioned and fixed, and the brake state is maintained.
[0034]
Note that the wiring 25 extending from the speed controller 22 to the control panel 21 and the brake wire 26 of the brake lever 23 are disposed downward through the hollow portion of the neck portion 3 because the cart body 1 is a hollow molded product as a whole. It is processed smartly without exposure.
[0035]
In order to use the golf cart having the above-described configuration, the player places the caddy bag 27 on the carrier portion 5 and leans against the bag support portion 9, and then fixes the caddy bag 27 with a belt or the like (not shown).
[0036]
The electric / control circuit of the golf cart of the present invention is configured as shown in FIG. When the player switches on the power switch 28, necessary power is supplied from the battery 20 to the power circuit 29, and a microprocessing unit (hereinafter abbreviated as MPU), which is the control panel 21, uses the same reference numeral 21 as the control panel. .) Will start. The MPU 21 has a built-in digital / analog converter (A / D converter) 21a, and is composed of an MPU body 21b composed of an input / output circuit, a CPU, a ROM, and the like.
[0037]
The player can start the golf cart by releasing the brake lever 23 from the lock mechanism 24 after confirming that the voltage level of the battery 20 is fully charged by the status display LED 30 provided in the core portion 11.
[0038]
The voltage of the battery 20 is divided by the voltage dividing circuit 31, converted into a digital signal by the analog / digital converter 21a, and the digital signal is sent to the MPU main body 21b. The MPU main body 21b determines the voltage level of the battery 20, and displays the voltage level on the status display LED 30 (for example, it is configured to light up in green when fully charged and red when insufficiently charged). . Therefore, the player can always check the voltage level of the battery 20, and can prevent a situation where the golf cart stops unexpectedly.
[0039]
The player adjusts the running speed of the golf cart with the speed controller 22 and adjusts it to his / her walking speed.
[0040]
The signal of the speed controller 22 is converted into a digital signal by the analog / digital converter 21a, and the digital signal is sent to the MPU main body 21b.
[0041]
The MPU main body 21b is programmed in advance with a motor speed so as to be able to control the speed corresponding to the signal from the speed controller 22 and the undulation of the golf course. The rotational speed of the motor 17 detected from the sensor 32 is compared, and a drive signal is sent to the motor drive circuit 33 so as to substantially match. Therefore, the golf cart can always run at a substantially constant speed regardless of the undulation of the golf course, and the player can enjoy a comfortable golf play.
[0042]
For example, when approaching a downhill, the rotational speed of the motor 17 increases, the motor rotational speed detection sensor 32 detects it, the player grasps the brake lever 23, and the brake switch 34 of the brake lever 23 is turned on. These signals are sent to the MPU main body 21 b, and the MPU main body 21 b switches the drive signal to the motor drive circuit 33 to the reverse drive signal and applies a load to the motor 17, thereby performing the deceleration control of the golf cart.
[0043]
On the contrary, when the motor 17 decreases when the motor 17 decreases in speed and the motor speed detection sensor 32 detects it, the signal is sent to the MPU main body 21b. Increase the driving force to accelerate the golf cart.
[0044]
Note that an overcurrent detection circuit 35 is provided between the motor drive circuit 33 and the motor 17 so that the motor 17 does not burn out even when a steep downhill is reached. When the overcurrent of the motor 17 is detected, the detection signal is sent to the MPU main body 21b. Therefore, the MPU main body 21b stops the drive signal to the motor drive circuit 33 and causes the status display LED 30 to perform an emergency display. ing.
[0045]
Further, the motor drive circuit 33 is provided with a heat sink temperature sensor 36. When the motor drive circuit 33 is detected to be overheated, the MPU body 21b stops the drive signal to the motor drive circuit 33 in the same manner as described above. Emergency display is made on the status display LED 30. Therefore, it is possible to prevent the motor drive circuit 33 from overheating and failing.
[0046]
When the player reaches near the ball drop point, the player fixes the brake lever 23 to the lock mechanism 24 in order to make the next shot.
[0047]
The lock mechanism 24 is provided with a brake lock switch mechanism 37. When the brake lever 23 is fixed, the signal is sent to the MPU main body 21b. The MPU main body 21b is configured to stop the drive signal to the motor drive circuit 33 and display the lock state on the status display LED 30 (the invention according to claim 2 above). Therefore, the player can visually recognize that the brake is in a locked state, and the player can concentrate on the play without worrying about the golf cart moving unintentionally because the brake is not sufficiently locked.
[0048]
When golf play is finished, the player fixes the brake lever 23 to the lock mechanism 24, confirms that the brake is in the locked state by the status display LED 30, and then turns off the power switch 28. Therefore, the brake lock state is surely confirmed, and the next player can be used safely.
[0049]
[Effects of the present invention]
The one-bag electric golf cart according to the first and second aspects of the present invention has a relatively simple mold structure because the cart body is integrally formed into a hollow structure utilizing the features of the rotatable molding method. , Cart body molding costs can be reduced. Since it is a molding method that does not require pressure, it does not require an extra-large and large-capacity molding machine, and the equipment cost and running cost are low, so the cart body molding cost can also be reduced. Therefore, it contributes to the provision of a low-cost golf cart.
[0050]
Since the cart body is integrally molded into a hollow structure, it is lightweight, requires less resin raw material, requires almost no assembly after molding, has no concerns about the structure and strength of the seam, and is easy to manufacture It is possible to provide a golf cart with a design that is excellent in design, and the satisfaction of the player can be obtained.
[0051]
In addition, as a feature of the rotatable molding method, the corner portion of the cart body is formed with a large thickness, so that there is also an advantage that the strength of the cart body can be secured sufficiently.
[0052]
Since a polyolefin-based resin that is easy to dispose of and recycle is used as the resin material, it is possible to provide an environment-friendly and colorful golf cart. Moreover, since it is excellent in weather resistance, it is less likely to be deteriorated or sunburned even when exposed to ultraviolet rays or rain wind.
[0053]
The golf cart can be operated in a comfortable posture by changing the position, such as a short player holding the low grip part and a tall player holding the high grip part. Therefore, anyone can use it comfortably regardless of physique differences between adults and children, men and women, or Japanese and Westerners.
[0054]
Furthermore, with the player holding the handle, speed control and brake lever operation can be performed with one hand, which is convenient.
[0055]
Since the running speed of the golf cart is always controlled to the running speed corresponding to the speed controller regardless of the undulation of the golf course, the player can comfortably operate the golf cart.
[0056]
In addition, the player can visually confirm that the brake is in a locked state, and the player can concentrate on playing without worrying about the golf cart being inadvertently moved due to insufficient brake locking.
[Brief description of the drawings]
FIG. 1 is a schematic structural view of an electric golf cart for one bag according to the present invention.
FIG. 2 shows a front perspective view of an electric golf cart for one bag according to the present invention.
FIG. 3 is a rear perspective view of an electric golf cart for one bag according to the present invention.
FIG. 4 is a rear view of an electric golf cart for one bag according to the present invention.
FIG. 5 is a plan view of an electric golf cart for one bag according to the present invention.
FIG. 6 shows an electric / control circuit diagram of an electric golf cart for one bag according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cart body 2 Chassis part 3 Neck part 4 Handle part 7 Lid 8 Battery chamber 10 Handle 10a Low level grip part 10b High level grip part 11 Core part 15 Suspension mechanism 16 Front wheel 17 Motor 18 Differential gear device 19 Rear wheel 20 Battery 21 Control panel (Microprocessing unit)
22 Speed controller 23 Brake lever 24 Lock mechanism 27 Caddy bag 30 Status indicator LED
32 Motor rotation detection sensor 33 Motor drive circuit 34 Brake switch 37 Brake lock switch

Claims (2)

The entire cart body including the chassis part, the neck part rising from the same part, and the handle part at the upper end of the neck part are integrally molded into a hollow structure by the rotary molding method of polyolefin resin,
The wheels under the chassis consist of one front wheel and two rear wheels. The front wheels can swing freely in the horizontal direction and have a suspension mechanism. The two rear wheels are driven by a motor. Is configured as a drive wheel with a differential gear device,
A carrier part for loading a caddy bag is provided on the upper surface of the chassis part, and a battery and a control panel are mounted in a battery chamber formed with an openable / closable lid,
The handle part at the upper end of the neck part is formed in a flat plate shape, a concave back support part is provided at the front end to support the caddy back upright, and a round bar handle is formed in the peripheral part from the neck part toward the rear side In addition, the round bar-shaped handle is bent upward from a lower grip portion that extends downward from both sides of the handle portion and is curved downward, and from a corner portion that is bent substantially perpendicular to the direction of travel. It is composed of a high-level grip part that leads to the core part,
An electric golf cart for one bag, wherein a dial type speed controller is installed in the core portion , and a brake lever is installed together with a lock mechanism below the round bar handle. The entire cart body including the chassis part, the neck part rising from the same part, and the handle part at the upper end of the neck part are integrally molded into a hollow structure by the rotary molding method of polyolefin resin,
The wheels under the chassis consist of one front wheel and two rear wheels. The front wheels can swing freely in the horizontal direction and have a suspension mechanism. The two rear wheels are driven by a motor. Is configured as a drive wheel with a differential gear device,
A carrier part for loading a caddy bag is provided on the upper surface of the chassis part, and a battery and a control panel are mounted in a battery chamber formed with an openable / closable lid,
The control panel consists of a microprocessing unit determines a voltage level of the battery which has been converted into a digital signal, the speed controller of the signal is sent to the microprocessing unit into a digital signal, advance rate in microprocessing unit It corresponds to the controller of the signal, and the rotation speed of the motor to allow the speed control corresponding to the undulations of golf have been programmed, and a rotational speed of the motor detected by the rotational speed and the motor rotational speed detection sensor compared with a configuration to send a driving signal to the motors driving circuit so as to substantially coincide,
The handle part at the upper end of the neck part is formed in a flat plate shape, a concave back support part is provided at the front end to support the caddy back upright, and a round bar handle is formed in the peripheral part from the neck part toward the rear side In addition, the round bar-shaped handle is bent upward from a lower grip portion that extends downward from both sides of the handle portion and is curved downward, and from a corner portion that is bent substantially perpendicular to the direction of travel. It is composed of a high-level grip part that leads to the core part,
Dial type speed controller is installed in the core portion, wherein are brake lever below the rod-shaped handle is provided with a locking mechanism, brake switch is provided on the brake lever, to the motor drive circuit through the brake switch or switching the drive signal in the reverse drive signal, or a configuration to stop,
The locking mechanism brake lock switch is provided on the control panel when the brake lever is fixed, and wherein the displaying the microprocessing unit is locked to the state display LED, Wa Nbaggu Motorized golf cart.

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